My basic point here is that it seems like you guys are playing the cards too much in a game that's notorious for the poor play of its players. Every board is different, though. The VAST majority of the time I'd check call on the river, too. I've seen a lot of players that would cap with an 8 or a bluff there. Please don't get the impression that I'd generally keep raising here, though. I'm just saying I'd consider it.

Oh, and my winrate is steady, FWIW. I definitely agree that wild swings described on this site seem to be influenced by overly aggressive play. A lot of people take overcards and middle pair too far.